
'''
prompt = "What is the air velocity of an unladen swallow?\n"
speed = input(prompt)

try:
    int(speed)

except:
    print("you should input number")
print("program doing")
'''
import os
hours = input("input hours: ")
rate  = input("input rate: ")

try:
    hours = int(hours)
    rate = int(rate)

    print("pay  = {}".format(hours*rate))
except :
    print("Error, please enter numeric input")
    os._exit()






